| 摘要 |
Arc lamp illuminator which can be used in an optical device for the transfer of patterns, incorporating a mixed fibre bundle which intercepts in an image plane of the source part of the emitted radiation. The exit cross-section of the bundle is adapted to the degree of coherence of the desired illumination measured on the pupil of the optical transfer device. At the entrance, the fibres of the bundle are assembled into two separate bundles, whose ends are aligned with the maximum intensity zone formed in the image plane of the source.
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